Learn more about Refinitiv My News EXCLUSIVE China detains US seismologist who has studied North Korean nuclear tests By Jonathan Landay July 14, 2026 5:48 AM GMT+10 Updated 2 hours ago Item 1 of 3 Dr. Yufang Rong and her husband Dr. Youlin Chen, an American seismologist held for nearly two years by China, pose together in this undated photograph provided on July 13, 2026. Courtesy Dr. Yufang Rong/Handout via REUTERS [1/3] Dr. Yufang Rong and her husband Dr. Youlin Chen, an American seismologist held for nearly two years by China, pose together in this undated photograph provided on July 13, 2026. Courtesy Dr. Yufang... Purchase Licensing Rights , opens new tab Read more Summary American seismologist held in China for nearly two years Expert on detection of North Korean nuclear tests Only American designated as wrongfully detained by China Concerns that China could use his research to mask nuclear tests WASHINGTON, July 13 (Reuters) - A Chinese-born American seismologist ...